The tablet is called Plimpton 322, and is described by Neugebauer (The Exact Sciences in Antiquity (Dover, 1969) p. 40) as ‘one of the most remarkable documents of Old-Babylonian mathematics’. The name arises simply from the fact that the tablet has catalogue number 322 in the George A. Plimpton collection at Columbia University, New York. Plimpton bought it in about 1923 from a Mr Banks who lived in Florida; it is not certain where he obtained it, but it may have been dug u

Bill Nye - Music (Part 1) Music comes from many different things and many different places. But what is music? And how do we hear it? In this video, Bill Nye explains the science behind music. Some key vocabulary words in this video include: notes, vibration, waves, pitch, rhythm, patterns, eardrum, cochlea, auditory nerve, tuning fork, and air molecules. There are three parts to this video series. Run time 07:50.

How to Write in Response to Reading When writing in response to reading, talk about the book first and have the students write down questions for discussion. Build critical thinking skills through writing in response to reading with advice from a school teacher. (1:10)Author(s): No creator set

Appliance Ownership and Working Women Even in the decade before the term "women's lib" was a common phrase, the number of married women entering the workforce increased dramatically -- thanks largely to washers, dryers and freezers, according to research from the University of Notre Dame. But "liberating" women from housework and propelling them into the workforce may not be the whole story, according to Steven Lugauer, a Notre Dame economist whose research was published recently in Labour Economics. Learn More: http://newsinfo.nd.eAuthor(s): No creator set